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https://github.com/Azgaar/Fantasy-Map-Generator.git
synced 2025-12-17 09:41:24 +01:00
use sprites for 3d labels
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Azgaar
parent
1d7ba8568f
commit
2502e1c916
2 changed files with 49 additions and 93 deletions
140
modules/ui/3d.js
140
modules/ui/3d.js
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@ -13,13 +13,10 @@
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const drawSVG = document.createElementNS("http://www.w3.org/2000/svg", "svg");
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document.body.appendChild(drawSVG);
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let icons = [];
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let labels = [];
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let states = [];
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let icons = [];
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let lines = [];
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const fontCache = {Georgia: "", "Times New Roman": "", "Comic Sans MS": "", "Lucida Sans Unicode": "", "Courier New": "", Verdana: "", Arial: "", Impact: ""}; // default are web-safe fonts
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// initiate 3d scene
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const create = async function (canvas, type = "viewMesh") {
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options.isOn = true;
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@ -29,6 +26,7 @@
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// redraw 3d scene
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const redraw = function () {
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deleteLabels();
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scene.remove(mesh);
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Renderer.setSize(Renderer.domElement.width, Renderer.domElement.height);
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if (options.isGlobe) updateGlobeTexure();
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@ -73,24 +71,12 @@
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const setScale = function (scale) {
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options.scale = scale;
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geometry.vertices.forEach((v, i) => (v.z = getMeshHeight(i)));
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geometry.verticesNeedUpdate = true;
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geometry.computeVertexNormals();
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geometry.verticesNeedUpdate = false;
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// for (const textMesh of labels) {
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// raycaster.ray.origin.x = textMesh.position.x;
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// raycaster.ray.origin.z = textMesh.position.z;
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// textMesh.position.y = raycaster.intersectObject(mesh)[0].point.y + textMesh.elevation;
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// }
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// for (const iconMesh of iconMeshs) {
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// raycaster.ray.origin.x = iconMesh.position.x;
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// raycaster.ray.origin.z = iconMesh.position.z;
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// iconMesh.position.y = raycaster.intersectObject(mesh)[0].point.y;
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// }
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render();
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redraw();
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};
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const setLightness = function (intensity) {
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@ -214,63 +200,27 @@
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return true;
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}
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function svg2base64(svg) {
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const str_xml = new XMLSerializer().serializeToString(svg);
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return "data:image/svg+xml;base64," + btoa(str_xml);
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}
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function textureToSprite(texture, width, height) {
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const map = new THREE.TextureLoader().load(texture);
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const material = new THREE.SpriteMaterial({map});
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material.depthTest = false;
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function texture2mesh(texture, width = 1, height = 1, backface = false) {
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texture = new texture_loader.load(texture);
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texture.minFilter = THREE.LinearFilter; // remove `texture has been resized` warning
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const material = new THREE.MeshBasicMaterial({map: texture, side: backface ? THREE.DoubleSide : THREE.FrontSide, depthWrite: false});
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material.transparent = true;
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const mesh = new THREE.Mesh(square_geometry, material);
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mesh.scale.x = width;
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mesh.scale.y = height;
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mesh.renderOrder = 1;
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return mesh;
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}
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async function createStateText(font, size, color, label, quality = 10) {
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drawSVG.innerHTML = "<defs></defs>";
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drawSVG.appendChild(label.cloneNode(true));
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if (fontCache[font] == undefined) {
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fontCache[font] = (await GFontToDataURI(`https://fonts.googleapis.com/css?family=${font}`)).join("\n");
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}
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drawSVG.children[0].innerHTML = `<style type="text/css">${fontCache[font]}</style>`;
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drawSVG.children[0].appendChild(svg.select(label.childNodes[0].href.baseVal).node().cloneNode(true)); // href of path in defs
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drawSVG.children[1].setAttribute("transform", `scale(${quality} ${quality})`);
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drawSVG.children[1].setAttribute("font-family", font);
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drawSVG.children[1].setAttribute("font-size", size);
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drawSVG.children[1].setAttribute("fill", color);
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drawSVG.removeAttribute("viewBox");
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const bbox = drawSVG.getBBox();
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drawSVG.setAttribute("viewBox", [bbox.x, bbox.y, bbox.width, bbox.height].join(" "));
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drawSVG.setAttribute("width", bbox.width);
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drawSVG.setAttribute("height", bbox.height);
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const mesh = texture2mesh(svg2base64(drawSVG), bbox.width / quality, bbox.height / quality, true);
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mesh.rotation.set(THREE.Math.degToRad(-90), 0, 0);
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return mesh;
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const sprite = new THREE.Sprite(material);
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sprite.scale.set(width, height, 1);
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return sprite;
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}
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async function createTextLabel({text, font, size, color, quality}) {
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drawCtx.font = `${size * quality}px ${font}`;
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drawCtx.canvas.width = drawCtx.measureText(text).width;
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drawCtx.canvas.height = size * quality * (1 + 1 / 4); // adding a margin of 1/4 of the size because text sometime overflow the font size
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drawCtx.canvas.height = size * quality * 1.25; // 25% margin as text can overflow the font size
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drawCtx.clearRect(0, 0, drawCtx.canvas.width, drawCtx.canvas.height);
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drawCtx.font = `${size * quality}px ${font}`;
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drawCtx.fillStyle = color;
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drawCtx.fillText(text, 0, size * quality);
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return texture2mesh(drawCtx.canvas.toDataURL(), drawCtx.canvas.width / quality, drawCtx.canvas.height / quality);
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return textureToSprite(drawCtx.canvas.toDataURL(), drawCtx.canvas.width / quality, drawCtx.canvas.height / quality);
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}
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function get3dCoords(baseX, baseY) {
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@ -289,18 +239,26 @@
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raycaster = new THREE.Raycaster();
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raycaster.set(new THREE.Vector3(0, 1000, 0), new THREE.Vector3(0, -1, 0));
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// burg labels
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const states = viewbox.select("#labels #states");
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const cities = burgLabels.select("#cities");
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const towns = burgLabels.select("#towns");
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const city_icons = burgIcons.select("#cities");
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const town_icons = burgIcons.select("#towns");
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const stateOptions = {
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font: states.attr("font-family"),
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size: +states.attr("data-size"),
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color: states.attr("fill"),
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elevation: 20,
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quality: 20
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};
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const cityOptions = {
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font: cities.attr("font-family"),
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size: +cities.attr("data-size"),
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color: cities.attr("fill"),
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elevation: 10,
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quality: 10,
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quality: 20,
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iconSize: +city_icons.attr("size"),
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iconColor: "#666",
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line: 10 - cities.attr("data-size") / 2
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@ -311,7 +269,7 @@
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size: +towns.attr("data-size"),
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color: towns.attr("fill"),
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elevation: 5,
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quality: 10,
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quality: 20,
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iconSize: +town_icons.attr("size"),
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iconColor: "#666",
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line: 5 - towns.attr("data-size") / 2
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@ -323,21 +281,23 @@
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const town_icon_geometry = new THREE.CylinderGeometry(townOptions.iconSize * 2, townOptions.iconSize * 2, townOptions.iconSize, 16, 1);
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const line_material = new THREE.LineBasicMaterial({color: cityOptions.iconColor});
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// burg labels
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for (let i = 1; i < pack.burgs.length; i++) {
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const burg = pack.burgs[i];
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if (burg.removed) continue;
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const isCity = burg.capital;
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const [x, y, z] = get3dCoords(burg.x, burg.y);
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const options = isCity ? cityOptions : townOptions;
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if (layerIsOn("toggleLabels")) {
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const burgMesh = await createTextLabel({text: burg.name, ...options});
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const burgSprite = await createTextLabel({text: burg.name, ...options});
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burgMesh.elevation = options.elevation;
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burgMesh.position.set(x, y + options.elevation, z);
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burgMesh.size = options.size;
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burgSprite.position.set(x, y + options.elevation, z);
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burgSprite.size = options.size;
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labels.push(burgMesh);
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scene.add(burgMesh);
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labels.push(burgSprite);
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scene.add(burgSprite);
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}
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// icons
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@ -360,17 +320,20 @@
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}
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// state labels
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const state_labels = svg.select("#viewbox #labels #states");
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for (const label of state_labels.node().children) {
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const text_mesh = await createStateText(state_labels.attr("font-family"), state_labels.attr("font-size"), state_labels.attr("fill"), label);
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const id = label.id.match(/\d+$/);
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const pos = pack.states[id].pole;
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const [x, y, z] = get3dCoords(pos[0], pos[1]);
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text_mesh.position.set(x, y + 20, z);
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text_mesh.elevation = 20;
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if (layerIsOn("toggleLabels")) {
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for (let i = 1; i < pack.states.length; i++) {
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const state = pack.states[i];
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if (state.removed) continue;
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states.push(text_mesh);
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scene.add(text_mesh);
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const [x, y, z] = get3dCoords(state.pole[0], state.pole[1]);
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const stateSprite = await createTextLabel({text: state.fullName, ...stateOptions});
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stateSprite.position.set(x, y + stateOptions.elevation, z);
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stateSprite.size = stateOptions.size;
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labels.push(stateSprite);
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scene.add(stateSprite);
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}
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}
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}
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@ -388,14 +351,6 @@
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}
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labels = [];
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for (const mesh of states) {
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scene.remove(mesh);
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mesh.material.map.dispose();
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mesh.material.dispose();
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mesh.geometry.dispose();
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}
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states = [];
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for (const mesh of icons) {
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scene.remove(mesh);
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mesh.material.dispose();
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@ -579,9 +534,10 @@
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function doWorkOnRender() {
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console.log("doWorkOnRender");
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for (const [i, label] of labels.entries()) {
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const isVisible = label.position.distanceTo(camera.position) < 50 * label.size;
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label.visible = lines[i].visible = isVisible;
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if (label.visible) label.rotation.copy(camera.rotation);
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const dist = label.position.distanceTo(camera.position);
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const isVisible = dist < 80 * label.size && dist > label.size * 6;
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label.visible = isVisible;
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if (lines[i]) lines[i].visible = isVisible;
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}
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}
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